Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Redundant Encoding(also: Redundant Coding, Multi-Channel Encoding)
- A design principle that communicates information through multiple visual channels simultaneously — such as colour plus shape, pattern, text label, or position — so that no single channel is required for comprehension. Redundant encoding is a foundational recommendation for CVD…
- Relative Font Sizing(also: Relative Units, Scalable Typography, Flexible Font Sizes)
- The practice of specifying text sizes using relative units (such as em, rem, or percentages) rather than absolute units (such as pixels or points), allowing text to scale when users adjust their browser or system font size settings. Relative font sizing is an important…
- Remote Assistance(also: Remote Sighted Assistance, Visual Interpreting)
- A service model where people who are blind or have low vision connect with sighted volunteers or trained agents via a live video call to receive real-time visual descriptions and guidance. Services like Be My Eyes and Aira use smartphone cameras to share the user's environment…
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